2. Questions Bank
  3. 11th Class
  4. Mental Ability
  5. Relations and Functions

11th Class Mental Ability Relations and Functions Question Bank Question - Symbols Relation

  • question_answer
    If \[\mathbf{A+D>C+E, C+D=2B}\]and\[\mathbf{B+E>C+D}\], it necessarily follows that

    A) \[B+D>C+E\]

    B) \[A+B>2D\]

    C) \[A+D>B+E\]

    D) \[A+D>B+C\]

    E) None of these

    Correct Answer: D

    Solution :

    Explanation Option (d) is correct. In terms of heights, we have: \[B+E>C+D,\,\,C+D\Rightarrow 2B\Rightarrow B+E>2B\Rightarrow E>B.\] \[A+D>C+E,\,\,E>B\Rightarrow A+D>C+B.\]


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